"Emphasis mine."<p>Heh... How exactly could the emphasis <i>not</i> be his? Last I checked the HTTP protocol didn't have any provision for emphasizing headers, so it couldn't have been the server that added the emphasis. ;-)
If you'd like to join in the header-sniffing fun, here's a bookmarklet that will show a site's HTTP headers in a popup: <a href="http://pastebin.com/pTDun3GT" rel="nofollow">http://pastebin.com/pTDun3GT</a>
Just for fun I've tried a script over the Alexa top 1M sites...<p>Strangest thing:<p><pre><code> www.vg.no
X-VG-WebServer: leon
X-VG-WebCache: dexter
X-Rick-Would-Never: Know the Rules, and So Do I
X-VG-Korken: http://www.youtube.com/watch?v=Fcj8CnD5188</code></pre>
Raanan.com (one of the Automattic staff) has a similar header - check out his X-hacker header:<p>"X-hacker: If you're reading this, you should visit automattic.com/jobs and apply to join the fun, mention this header."<p><a href="http://hurl.it/hurls/bf52ecc89d75c83ee8a68171bd624992607e1629/8af0ad1d9df2a2cbcb583024ecbdd0cb80afcf58" rel="nofollow">http://hurl.it/hurls/bf52ecc89d75c83ee8a68171bd624992607e162...</a>